“For it had been better for men to be born dumb and devoid of reason than to turn the gifts of providence to their mutual destruction.”
Book XII, Chapter I, 2; translation by H. E. Butler
De Institutione Oratoria (c. 95 AD)
Original
Mutos enim nasci et egere omni ratione satius fuisset quam providentiae munera in mutuam perniciem convertere.
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Quintilian 18
ancient Roman rhetor 35–96Related quotes

“Wave Mechanics,” p. 75
On Science, Necessity, and the Love of God (1968)

“Be not dumb, obedient slaves in an army of destruction. Be heroes in an army of construction.”
"Strike Against War", speech in Carnegie Hall (5 January 1916) http://www.historyisaweapon.com/defcon1/helenstrike.html
Context: Strike against war, for without you no battles can be fought. Strike against manufacturing shrapnel and gas bombs and all other tools of murder. Strike against preparedness that means death and misery to millions of human beings. Be not dumb, obedient slaves in an army of destruction. Be heroes in an army of construction.

Rien ne fait mieux comprendre le peu de chose que Dieu croit donner aux hommes, en leur abandonnant les richesses, l'argent, les grands établissements et les autres biens, que la dispensation qu'il en fait, et le genre d'hommes qui en sont le mieux pourvus.
Aphorism 24
Les Caractères (1688), Des biens de fortune

XVI, 19
The Kitáb-I-Asmá
Context: Those who have deprived themselves of this Resurrection by reason of their mutual hatreds or by regarding themselves to be in the right and others in the wrong, were chastised on the Day of Resurrection by reason of such hatreds evinced during their night. Thus they deprived themselves of beholding the countenance of God, and this for no other reason than mutual denunciations.